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Fabricating and Labeling Microbubbles with Fluorescent and Radioactive Tracers
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Rapidly oscillating microbubbles force development of micro- and mesoporous interfaces and composition gradients in
Daria V Andreeva1, Pavel V Cherepanov1, Y S Avadhut2
1Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore.
Ultrasonics Sonochemistry
|August 4, 2018
Summary
Rapidly oscillating microbubbles offer a novel approach to materials processing, enhancing particle surface area and creating complex interfaces for applications in catalysis and energy storage.
Area of Science:
- Materials Science
- Chemical Engineering
- Surface Chemistry
Background:
- Understanding energy transfer necessitates advanced methods for processing complex solids.
- Current techniques face limitations with compositionally graded or thermodynamically inaccessible materials.
Purpose of the Study:
- To investigate the efficacy of rapidly oscillating microbubbles for materials processing.
- To explore the manipulation of surface temperature and gradient formation using ultrasonic treatment.
Main Methods:
- Utilized ultrasonic treatment involving rapidly oscillating microbubbles.
- Analyzed changes in particle surface area, micropore formation in metal phases, and mesopore formation in metal oxide phases.
Main Results:
- Ultrasonic treatment significantly increased particle surface area (up to 180 m²g⁻¹).
- Formation of micropores in the metal phase and mesopores in the metal oxide phase was observed.
- Demonstrated predictable manipulation of surface temperature and gradient creation.
Conclusions:
- Rapidly oscillating microbubbles provide a unique energy dissipation mechanism for materials processing.
- This method facilitates the creation of complex interfaces with potential applications in catalysis, energy storage, and drug delivery.
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